Results 1 to 10 of about 43,669 (311)

Influence of Overlying Strata Movement on the Stability of Coal in Fully Mechanized Top-Coal Caving Mining

Applied Sciences, 2023
Overlying strata movement has an important effect on the stability of coal along goaf. In order to study the impact of overlying strata movement on the stability of coal during fully mechanized top-coal caving mining, a simulation experiment was ...
He Ren, Yimin Song, Lianpeng Dai, Junpeng Zou, Chun Zhu   +4 more
doaj   +5 more sources

Study on the shear movement law of overlying strata by slice mining [PDF]

Energy Science & Engineering, 2020
Based on the analysis of shear movement characteristics of overlying strata under mining effect, a quantitative calculation model for shear displacement in the along‐strike and down‐dip directions of the overlying strata is established.
Junhui Fu, Guangcai Wen, Haitao Sun, Xuelin Yang   +3 more
doaj   +4 more sources

Experimental research on overlying strata movement and fracture evolution in pillarless stress-relief mining [PDF]

International Journal of Coal Science & Technology, 2015
In multiple seams mining, the seam with relatively low gas content (protective seam) is often extracted prior to mining its overlying and/or underlying seams of high gas content and low permeability to minimize the risk of high gas emission and outbursts of coal and gas.
Xue, Junhua, Wang, Hanpeng, Zhou, Wei, Ren, Bo, Duan, Changrui, Deng, Dongsheng   +5 more
semanticscholar   +4 more sources

An aftermath analysis of caving characteristics and movement of overlying strata in fully mechanized longwall gob

Scientific Reports
The large-scale collapse of overlying strata in the gob directly affect the safe production of coal mines; they are also the major causes of geological disasters, such as ground cracks, surface subsidence, and ground collapse. In this paper, the movement
Chenlin Wang, Lihui Sun, Haoran Shen
doaj   +4 more sources

Strata pressure behavior and overlying strata movement characteristics of slicing backfill mining in thick coal seams

Energy Exploration & Exploitation, 2023
To improve the coal recovery rate, paste backfill mining was used for 3# coal seam under the industrial square in Panji No.4 Coal Mine. Theoretical analysis, numerical simulation, and similar simulation were applied to study the underground pressure behavior and the overlying strata movement. Results demonstrate the following. (a) Caving mining exerts
Zhihua Li, Ke Yang, Tingshuang Wei, Cheng Liu, Peng Zhou, Jianhua Miao   +5 more
openaire   +3 more sources

Study on Overlying Strata Movement and Surface Subsidence of Coal Workfaces with Karst Aquifer Water [PDF]

Mathematics, 2022
The overlying strata layers of coal workfaces with karst aquifer water normally causes serious safety problems due to the precipitation, drainage and water inrush, such as a wide range and long term of surface subsidence. In this study, by taking 10,301 working faces of the Daojiao coal mine in Guizhou Province as the engineering background, the ...
Yuliang Wang, Guiyi Wu, Yang Liu, Zhanbo Cheng   +3 more
openaire   +4 more sources

Overlying strata movement law and rockburst prevention & control for fully mechanized top coal caving face in extra-thick coal seams [PDF]

Sci Rep
To investigate the movement law of overlying strata in the fully mechanized top-coal caving face of extra-thick coal seams and further achieve the effective prevention and control of rock burst.
Hai Rong, Longyue He, Yadi Wang, Xiangzhi Wei, Shilong Wei, Suihan Yang, Jincheng Li, Linlin Chen   +7 more
semanticscholar   +2 more sources

Influence of Mechanical Properties of Filling Paste on Overlying Strata Movement and Surface Settlement [PDF]

Shock and Vibration, 2022
In order to study the relationship between coal seam buried depth and surface subsidence and select appropriate filling materials, taking Donggou coal mine as the engineering geological prototype, through mechanical test and theoretical analysis, this paper studies the distribution characteristics of in-situ stress and the selection of paste filling ...
Yu-Fei Liu, Xin-Hua Wu, Tao Zhu, Xian-Jun Wang, Guo-Yu Zhang, Zhi-Gang Wang   +5 more
openaire   +3 more sources

Overlying Strata Movement and Abutment Pressure Evolution Process of Fully Mechanized Top Coal Caving Mining in Extra Thick Coal Seam

Geofluids, 2021
Taken overlying strata of fully mechanized top coal caving mining (FMTCCM) in 15 m extra thick coal seam as the research object, the comprehensive research methods such as field investigation, theoretical calculation, and numerical analysis are used to ...
Yongqiang Zhao, Yingming Yang, Xiaobin Li, Zhiqi Wang   +3 more
doaj   +2 more sources

Experimental Study on Overlying Strata Movement Characteristics and Distributed Optical Fiber Characterization of Stope

Journal of Sensors, 2022
In order to study the migration characteristics and strata behavior law of mining-induced rocks in fully mechanized caving face of coal mine, taking the actual geological mining of Longwanggou Coal Mine as the background, using computer software (KSPB) to identify the location of key strata.
Jing Chai, Zhicheng Tian, Yibo Ouyang, Yongliang Liu, Dingding Zhang, Jianfeng Yang   +5 more
openaire   +2 more sources